Grease-cup.



U r s fr A* ont@ ALBERTO. GRUNWALD, OF CHICAGO, ILLINOIS, ASSIGNOR TO PRECISION'METAL WORKERS, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS. i

GREASE-CUP.

; Specification of Letters Patent. Patented May 22, 191'?,

Applicationmed November 14, 191e. serial No. 131,193.

`connecting rod, or upon the stationary bearing of a crank-shaft. In either case, it operates successfully, owing to the normal vibration, or jar, which is incidental .tothe operation of any wellconstructed engine, or machine.

The primary object of the invention is to provide a grease-cup of improved general construction, equipped with an agitator of improved construction.

The invention i illustrated in its preferred embodiment in the accompanying drawing, in which-M Figure 1 represents a sectional view of a bearing equipped with a grease-cup embodying the invention; Fig. 2, an inner view of the grease-cup cover; Fig. 3, a perspec- Vtive view showing the cover removed from the grease-cup, ,the .latter being shown brokenly; Fig. 4, a plan sectional view showing the nipple ofthe grease-cup and a retainer employed in connection therewith; Fig. 5, a view of a blank employed inthe formation of a cone or feed-head with which the agitator-rod is equipped; Fig. 6, a sectional view of said cone in the formed condition; and Fig. 7, a view showing a modification of the cover of the grease-cup.

i In the construction illustrated, the invention is shown applied to a stationary `bear-V ing, but it` `will be understood that it is equally applicable to a movable bearing, as, for instance, the bearing of a connecting rod. In the construction illustrated, A represents a box, orbearing; B, the journal of a shaft mounted in said bearing; and C, the improved grease-cup applied to the bear- Such a `grease-cup may bev The device C comprises a grease-cup proper, or casing, C, equipped with a detachable cover C2; Vand an agitator C3 contacting with the journal B, the upper portion of the agitatorhaving a guide formed in, or connectedwith, the cover C2.

The grease-cup C" may be 'drawn from a disk of metal byl suitable stamping or cupping operations. It is of the usual4 form and is provided at its lower end with an integrallyformed externally-threaded nipple 1, having ahexagonal portion la, adapted for the application of awrench. The bearing A has itsupper portion provided with a vertical perforation 2, the upper end of which is countersunk and threaded toy re- Y ceive the'threaded nipple ofthe grease-cup. The cap or cover C2 is connected to the yupper portion of the grease-cup byv bayonet joint connections; and associated lwith the grease-cup andV its cap ,is la spring, which servesfto maintain the bayon'vetyjoint connections in interlockedf relation, so thatthe cap will be rigidly secured to the grease-cup, but readilydetaehable therefrom. The bayonet joint connections, in the form illu's- ,j

trated, comprise a pair of studs, or internal projections, 3, with which the downturned {iange of the cap C2 is equipped, and a pair of bayonet-slots 4, with which the upper marginal portion of the cup C is equipped at diametrical opposite points. f The bayonet slots 4 may beformed by striking the metal of the cup inwardly; and the Astuds 3 may be formed by striking the metal of the'flange 4 are provided with oftsets 4a, which are re'- ces'sed at their upper walls, so that the studs may interlockingly engage vsaid recesses.

The cap C2 is equipped internally with a yof the cap C2 inwardly. The bayonet slots i leaf-spring 5, which has its central portion bowed upwardly'vand secured to the central'l portion of the cap. The leaf-spring isf secured to the cap by punching a ,hole at the center of theV cap, extending the metal through a central perforation inthe leafspring and clenching the eyelet thus formed beneath the spring.)l This affords, also, a guide through which the upper portion of the agitator-'rod C3. extends. the leaf-spring bear 419,011 the upper edge of The ends of the cup C. It will thus be understood that when the studs 3 are entered in the bayonetslots 4 and the cap is .turned to bring the studs into the off-sets Ala, the studs will be forced, by the spring 5, to enter the recesses in' the upper walls of the off-sets, so that the studs will be firmly interlocked with the bayonet-slots.

The agitator C3 comprises a rod 6, the upper end of which works through the central guide in the cap C2, and the lower end of which extends through the perforation 2 and rests upon the journal B; a cone, or feed-head, 7, firmly secured to the rod 6 and preferably disposed so as to Vproject somewhat into the nipple l; and a light coilspring 8 confined between the cone 7 and the cap C2. from the sheet-metal blank shown in Fig. 5. The blank is in the form of a segment of an annulus, equipped with perforate ears 7 a. The annulus segment is curved to form a hollow cone, and the ears 7 are bent across the top of the hollow cone. The head, thus formed, is slipped on to the rod 6, the perforate ears closely engaging the rod; and the cone is held in place on the rod by means of projections 9 and 10, formed by nicking the rod with a cold-chisel, or the like, at points above and below the cone. In this manner the agitator-rod is equipped with an enlargement, or feed-head, at very slight cost.

The grease-cup is locked against unscrewing by means of a retainer 11. This comprises a metal stamping having a hexagonal opening adapted to receive the hexagon la of the grease-cup, and having an arm, or arms, 11a, adapted to embrace the sides of a longitudinal embossment 12, with which the journal-box A is equipped. In the modification shown in Fig. 7, the grease-cup C and the agitator C3 may be of the construction heretofore described. The

cap Ci is, however, of slightly modified form. It may be secured to the grease-cup by means of the bayonet joint construction shown in Fig. 3. It is, however, provided centrally with a hollow, boss 18, by which the u per end of the agitator-rod is housed. The eaf-spring 5a, in this case, extends across the open bottom of the cup, or embossment, 13, and is secured, by rivets 14, to the cap C4. At a central point, the leafspring is provided with a perforation, which forms a guide for the upper end of the agitator-rod. The upper end of theV coilspring 8, in this case, bears against the central portion ofthe leaf-spring 5a.

In each case, the spring 8 tends to re-seat the lower end of the agitator-rod on the journal each time the agitator is raised by the vibration, or jarring action of the machine. The result is that the grease Cannot The cone 7 is preferably formed permanently Vraise the agitator by wedging between the cone and the contracted ,wall at the lower end of the grease-cup.

The purpose of the agitator, of course, is to constantly keep the grease stirred up and tend to feed it slowly throughithe'perforation 2 to the journal. Incidentally, the spring 8 co-acts with ythe spring 5 in holding the cap C2 elevated, so that the studs C3 will be maintained in interlocking relation with the recesses in the upper walls of the off-sets 4a of the bayonet-slots.

When desired, the grease-cup cap may be removed with great facility by pressing downwardly upon the cap and rotating it to disengage the studs 3 from the'off-sets 4a.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitation should be understood therefrom, but the, appended claims should be construed as broadly as permissible, in view of the prior art.

What I regard as new, and desire to se-V cure by Letters Patent, is-

Y 1. In a device of the character set forth, the combination with a grease-cup, ofy a cap therefor provided with a downturned Harige and a leaf-spring connected with said Y with a nipple for attachment to a bearing,

an agitator protruding through said nipple, a cap provided with a downturned flange having bayonet-joint connections with the upper portion of said grease-cup, and a leafspring interposed between said cap and the g upper edge of said grease-cup, said cap and spring having a central perforation through which the stem of said agitator protrudes.

3. In a .grease-cup of the character set forth, an agitator comprising a rod, and a.

feed-head thereon comprising a segmental member of conical form equipped with perforate ears receiving and engaging said rod.

4. In a device of the character set forth,

the combination of a grease-cup provided with a nipple and equipped with a rigidly secured detachable top, of an agitator comprising a rod protruding through said nipple, a hollow conical member secured to said rod, and a coil-spring encircling said rod and interposed between said conical member and said cap.

5. The combination with a journal-box provided with a perforation having a threaded portion, of a grease-cup having a threaded nipple engaging the threaded portion of said perforation and provided with the combination with a grease-cup and a cap an angular portion, an agitator in said provided with a downturned lian-ge having grease-cup depending into said perforation, bayonet-joint connection With the upper por- 10 and a retainer having an angular opening tion of said grease-cup, of a leaf-spring engaging .the angular portion of said nipple Within and attached to said cap and bearing and an arm engaging the journal-box. on the upper edge of said grease-cup.

6. In a device of the Character set forth,V ALBERT C. GRUNWALD.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents Washington, D. C. 

